South American reference pole for the mid-Cretaceous: further constraints in the interpretation of Andean paleomagnetic data

A paleomagnetic study of the Aptian Cerro Barcino Formation in central Patagonia showed the presence of a stable magnetization with a positive tilt test. The obtained pole position (lat 85°S, long 181°E, α95 = 5.6°, N = 11) differs from reliable Early and Late Cretaceous South American cratonic pole...

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Guardado en:
Detalles Bibliográficos
Publicado: 1994
Materias:
Albian
block rotation
Cretaceous
palaeomagnetism
palaeopole position
tectonics
Argentina
Patagonia
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00917613_v22_n10_p933_Somoza
http://hdl.handle.net/20.500.12110/paper_00917613_v22_n10_p933_Somoza
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:A paleomagnetic study of the Aptian Cerro Barcino Formation in central Patagonia showed the presence of a stable magnetization with a positive tilt test. The obtained pole position (lat 85°S, long 181°E, α95 = 5.6°, N = 11) differs from reliable Early and Late Cretaceous South American cratonic poles. The Cerro Barcino pole overlaps coeval poles from the Chilean Andean fore arc previously interpreted to record crustal block rotations. -from Author

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